Adjustable chaffer or sieve.



'P-ATENTED JULY 21, 1903.-

'B. P. MARTI ENL ADJUSTABLB GHAFF-ER OR SIEVE.

APPLICATION IILBD MAY 5, 1900.

N0 MODEL.

5 PETER! c0 5 PNGTO-LITHD UNITED STATES Patented July .21, 1903.

PATENT OFFICE.

BENJAMIN F. MART'IEN, OF AsHLAND, 01110, ASSIGNOR To THE 1-11XsoN ADJUSTABLE Sl-EVE 00., OF ASHLAND, 01-110.

ADJUSTABLE C-HAFFE'R OR suave.

SPECIFICATIONforming part of ll'ietters Patent No. 734,4 67, dated J uly21, 1903.

Application filed May 5,1900. Serial No. 15,638. (No model.)

1'0 aZZ whom it may concern:

Be it known that I, BENJAMIN F. MARTIEN, a citizen of the United States, residing at Ashland, in the county of Ashland and State of Ohio, have invented certain new and useful Improvements in Adjustable Ohaffers or.

air upwardly from the channels of the corru-' gated slats, which shall be provided with means for simultaneously adjusting the series of slats when so desired, and which, withal, shall possess additional and desirable features and characteristics constituting the same a superior means for performing the requisite functions. 7

With this end or purpose in view my invention consists, objectively, in a sieve embracing a series of corrugated slats immovably fixed to shafts and said shafts united by suitable means whereby they can be rocked simultaneously and the slats caused invariably to lie in parallel planes.

It further consists in a sieve embracing corrugated slats having the channels provided with means for deflecting currents of air up-.

. the application of the principle.

Figure l is a top plan view of a part of a sieve, showing a series of corrugated slats and shafts journaled in a frame, the edges of the said slats overlapping one another and the crank-arms of the shafts provided with means for simultaneously rocking all the shafts. Fig. 2 is a section of Fig. 1, taken on line 2 2. Fig. 3 is a cross-section of a corrugated slat, taken on a line parallel with and adjacent the shaft.

Referring to the figures of the drawings, the

letter A designates the end piece of the frame which supports the shafts and corrugated slats of the sieve. B designates'the side pieces of the frame; 0, strips of wood or metal secured to the top surfaces of the side pieces B in any wellknown manner; D, bearings formed in the side pieces; E, the corrugated slats, preferably made of iron or thin metal which can be readily bent to shape; F, indentations made in the ribs of the corrugated slats, upon one side thereof, by striking up the metal 'or in any other way; G, shafts having crank-arms and to which shafts the corrugated slats are rigidly and immovably secured, said'shafts being journaled at the ends in the bearings D D of the side pieces, as clearly shown.

H is a strip of wood or metal, to which the ends of the crank-arms of the shafts are jour: naled in such away that the moyementof the strip will simultaneously rotate all the shafts.

I designates staples which fasten the shafts in the recesses of the indentations made in the ribs of the corrugatedslats, and J designates the solder applied to the contact surfaces of the shafts and indentations and which rigidly holds the shafts in immovable positions relative to the corrugated slats.

It will be observed that the indentations made in the ribs of the metallic corrugated slats serve a twofold purpose-first, as seats for the shafts, and,second, as deflectors of the currents of air which pass upwardly between the slats, as shown by thearrows in Fig. 2. It is absolutely necessary that'the shaftsshall be held immovable'relative to the. slats, so that when all the shafts are simultaneously rotated the corrugated slats themselveswill be shifted through the same arcs of imaginary circles, and thus preserve the uniformity in size of the openings between the adjacent edges of the slats. The staples I serve to hold the shafts within the seats or concave surfaces of the indentations in the ribs, but would not in all cases prevent a limited rotary movement of a shaft relative to a corru-,

gated slat. To anchor the shaft within the seats permanently and immovably, I apply solder J to the contact surfaces of the shaft and ribs, which, I find, insures great rigidity and strength of union which will withstand all the strains of severe service. Besides serving as concave seats for the shafts, the metalof the indentations projecting upwardly in the channels of the slats constitutes deflectors for the air moving along the channels and diverts part of it upwardly, as shown by the 'arrows, through the material which is moving over the slats. By uniting the crankarms of the shafts to a single strip it is obvious that all of the shafts and corrugated slats can be simultaneously rotated and the open spaces between the adjacent edges of the slats where they overlap be rendered uniform.

While I have illustrated and specifically set forth only one example of the physical embodiment of my invention, I do not thereby intend to restrict the scope thereof to the exact details as shown, inasmuch as changes and modifications and substitutions may be made and adopted at the will of the manufacturer without constituting a substantial departure.

What I claim as new, and desire to secure by Letters Patent, is

1. The combination in a chaifer or sieve, of a frame; corrugated slats; and straight shafts having cranks journaled in the frame; each of the said shafts being rigidly and immovably secured to the convex surfaces of the ribs on one side of a corrugated slat.

2. The combination in a chafier or sieve, of aframe; corrugated slats; and straight shafts having cranks journaled in the frame; each having indentations, F, in the ribs; in substance as and for the purpose set forth.

4:. The combination in a chaffer or sieve, of a frame; corrugated slats; and shafts journaled in the frame; said corrugated slats having obstructions or raised portions, as F, in the channels for deflecting and diverting currents of air upwardly from the channels.

5. The combination in a chafier or sieve, of a frame having bearings; corrugated slats having seats for shafts formed in the convex surfaces of the ribs; and shafts secured within the seats and journaled in the frame; each of the said shafts being rigidly and immovably anchored within the seats on one side of a slat by solder.

6. The combination in a chaifer or sieve, of a frame having bearings; shafts having cranks journaled in the bearings; corrugated slats immovably and rigidly secured to the shafts at the meeting points or surfaces of the shafts and the convex surfaces of the ribs on one side of the corrugated slats; means for uniting the crank-arms of the shafts; and means for simultaneously rotating the shafts.

In testimony whereof I affix my signature in presence of two witnesses.

BENJAMIN F. MARTIEN.

W'itnesses:

O. W. MYKRANTZ, J. W. MYKRANTZ. 

